Just a few time saving keyboard shortcuts.  Not every combination is listed - just the ones that I find helpful.  Don't type the plus, eh?

* Denotes keystroke combinations that only work with Finder (or Finder and a very limited number of applications)

<command> + A	select All items
<command> + C	Copy selected
<command> + D	Duplicate selected
<command> + F	Find with spotlight
<command> + G	find next
<command> + H	Hide window*
<command> + I	get Info on selected*
<command> + K	Konnect to server*
<command> + L	make an aLias of selected*
<command> + N	New window or document
<command> + O	Open selected
<command> + V	Paste item
<command> + W	close Window or document
<command> + Z	undo
<command> + M	Minimize window
<command> + <shift> + A	go to Applications folder*
<command> + <shift> + H	go to Home folder*
<command> + <option> + M	Minimize all windows*
<command> + <option> + O	Open selected then close finder*
<command> + <option> + T	hide Toolbar*
<command> + <option> + W	close all Windows or documents*